Compartment box for motor vehicles

ABSTRACT

The present invention provides a compartment box for motor vehicles. The compartment box includes a rectangular board, two side boards, a first covering board, and a second covering board. The side boards connect to two edge portions of the rectangular board, respectively. The first and second covering boards connect to the other two edge portions of the rectangular board, respectively. The first and second covering boards are separably coupled to the two side boards by a first coupling elements and a second coupling element, respectively. The first and second covering boards together provide a full-shield cover and form a concealable opening. Thus, the compartment box can be opened laterally, thereby to facilitate taking objects from or putting the objects in the compartment box.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to compartment boxes for motor vehicles, and more particularly, to a compartment box for motor vehicles, and the compartment box can be opened laterally.

2. Description of Related Art

A conventional compartment box is usually made from boards. The top surface of the compartment box is selectively equipped with a cover, such that the compartment box has therein a hermetically sealed receiving space.

However, in general, a trunk of a car has an L-shaped opening which faces outward and laterally. In the situation where an opening is provided at the top surface of the conventional compartment box put inside the trunk, users have to extend their upper limbs and then open the compartment box from above in order to take any object out of the compartment box. As a result, it is inconvenient to tidy or take any objects in the compartment box.

Furthermore, the conventional compartment boxes are usually made of rigid materials and have a specific volume. The conventional compartment box cannot be collapsed even when the compartment box is not in use. As a result, when not in use, the compartment boxes have to be stored in an allocated space to the detriment of effective space management and ease of storage.

In view of this, it is imperative to provide a compartment box adapted for use with motor vehicles and advantageously characterized by ease of storage and ease of use.

SUMMARY OF THE INVENTION

The present invention relates to a compartment box for motor vehicles. A first covering board and a second covering board of the compartment box together provide a full-shield cover. A concealable opening is laterally formed at the compartment box, such that the compartment box can be opened laterally to allow objects to be put into and taken out of the compartment box easily and conveniently.

The present invention provides a compartment box for motor vehicles. The compartment box for motor vehicles comprises: a rectangular board having a first edge portion, a second edge portion, a third edge portion, and a fourth edge portion consecutively connected; two side boards formed by extending the first edge portion and the third edge portion by a first length; a first covering board formed by extending the second edge portion by a second length and separably coupled to the two side boards by two first coupling elements, respectively, the second length being less than the first length; and a second covering board formed by extending the fourth edge portion by a third length and separably coupled to the two side boards by two second coupling elements, respectively, the third length being larger than a sum of the first length and a length of the first, edge portion, wherein the first covering board and the second covering board are separably coupled together to provide a full-shield cover, and a concealable opening is provided at the first covering board.

Implementation of the present invention at least involves the following inventive steps:

1. As the compartment box for motor vehicles is positioned inside the trunk, users can easily take objects out of the compartment box through a laterally-facing concealable opening thereof;

2. The compartment box is characterized in that covering boards are coupled to side boards by means of coupling elements, respectively, thereby rendering it easy to assemble and disassemble the compartment box; and

3. The compartment box can be folded up easily and thus is convenient to store.

Detailed features and advantages of the present invention are described in detail in the embodiments to allow persons skilled in the art to understand the technical contents of the present invention and implement the present invention accordingly. Persons skilled in the art can readily understand related objectives and advantages of the present invention according to the disclosure in this specification; the claims, and the drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a perspective schematic view of a compartment box for motor vehicles according to the embodiment of the present invention;

FIG. 2 is a schematic view of the compartment box before assembly according to the embodiment of the present invention;

FIG. 3 is another perspective schematic view of the compartment box according to the embodiment of the present invention;

FIG. 4A is a schematic view of the compartment box according to the embodiment of the present invention, showing that a partition board is fixed to a rectangular board of the compartment box;

FIG. 4B is a schematic view of the compartment box according to the embodiment of the present invention, showing that a partition board is fixed to a second covering board of the compartment box;

FIG. 5 is a schematic view of the compartment box shown in FIG. 4A and assembled in FIG. 5;

FIG. 6A is a schematic view of the compartment box according to the embodiment of the present invention, showing that two partition boards are fixedly disposed at different positions on the rectangular board of the compartment box, respectively;

FIG. 6B is a schematic view of the compartment box according to the embodiment of the present invention, showing that two partition boards are fixedly disposed at different positions on the second covering board of the compartment box, respectively;

FIG. 6C is a schematic view of the compartment box according to the embodiment of the present invention, showing a partition board fixed to the rectangular board and another partition board fixed to the second covering board;

FIG. 7 is a schematic view of the compartment box shown in FIG. 6C and assembled in FIG. 7;

FIG. 8A is a schematic view of the compartment box according to the embodiment of the present invention, showing a reinforced partition board fixed to the rectangular board;

FIG. 8B is a schematic view of the compartment box according to the embodiment of the present invention, showing a reinforced partition board fixed to the second covering board;

FIG. 9 is a schematic view of the compartment box shown in FIG. 8B and assembled in FIG. 9;

FIG. 10A is a schematic view of the compartment box according to the embodiment of the present invention, showing a first reinforced partition board fixed to the rectangular board and a second reinforced partition board fixed to the second covering board;

FIG. 10B is a schematic view of the compartment box according to the embodiment of the present invention, showing that two reinforced partition boards are fixedly disposed at different positions on the rectangular board;

FIG. 11 is a schematic view of the compartment box shown in FIG. 10B and assembled in FIG. 11;

FIG. 12A is a schematic view of the compartment box according to the embodiment of the present invention, showing a partition board fixed to the rectangular board and another partition board fixed to the second covering board, with the two partition boards overlapping each other; and

FIG. 12B is another schematic view of the compartment box shown in FIG. 12A.

DETAILED DESCRIPTION OF THE EMBODIMENT OF THE INVENTION

Referring to FIG. 1 through FIG. 3, in an embodiment of the present invention, a compartment box for motor vehicles includes a rectangular board 10, two side boards 20, a first covering board 30, and a second covering board 40. The rectangular board 10, the two side boards 20, the first covering board 30, and the second covering board 40 are made from lightweight foamed boards. Due to their material characteristics, foamed boards can be easily processed to attain advantageous features, such as superficial texture, elastic deformation, and flexibility. Furthermore, foamed boards are lightweight and thus suitable for use as the building blocks of a compartment box.

The rectangular board 10, which is a major board of the compartment box, has a convoluted surface (composed of grooves and ridges) designed to reinforce the rectangular board 10. The rectangular board 10 has a first edge portion 11, a second edge portion 12, a third edge portion 13, and a fourth edge portion 14 consecutively connected. The edge portions 11, 12, 13, 14 are the four sides of the rectangular board 10, respectively. The first edge portion 11 and the third edge portion 13 are the two short sides of the rectangular board 10, whereas the second edge portion 12 and the fourth edge portion 14 are the two long sides of the rectangular board 10. Alternatively, the first edge portion 11 and the third edge portion 13 are the two long sides of the rectangular board 10, whereas the second edge portion 12 and the fourth edge portion 14 are the two short sides of the rectangular board 10.

A flange 15 is disposed at the periphery of the rectangular board 10. If a container which contains a liquid is kept in the compartment box but the liquid leaks inadvertently, the flange 15 disposed at the periphery of the rectangular board 10 can confine the liquid to the compartment box, thereby preventing the liquid from leaking out of the compartment box.

The side boards 20 are formed by extending the first edge portion 11 and the third edge portion 13 of the rectangular board 10 outward by a first length L₁, respectively. The side boards 20 each have a convoluted surface (composed of grooves and ridges) designed to reinforce the side boards 20. Furthermore, surfaces of the side boards 20 which face away from the rectangular board 10 are defined as external surfaces of the compartment box. Handles 21 can be disposed on the external surfaces to facilitate delivery of the compartment box, respectively.

The first covering board 30 is formed as a result when the second edge portion 12 of the rectangular board 10 extends outward by a second length L₂. The second length L₂ is less than the first length L₁. The first covering board 30 is separably coupled to the two side boards 20 by two first coupling elements 50, respectively. The two first coupling elements 50 are first zippers disposed on two sides of the first covering board 30 and disposed at lower edges of the two side boards 20, respectively. The two sides of the first covering board 30 where the two first zippers are disposed run along the second length L₂. The first covering board 30 is positioned proximate to the lower edges of the two side boards 20 and is separably coupled thereto. As the second length L₂ is less than the first length L₁, the first covering board 30 gets coupled to the lower edges of the two side boards 20 as soon as the two side boards 20 and the first covering board 30 are erected and fastened to the first zippers.

The second covering board 40 is formed as a result when the fourth edge portion 14 of the rectangular board 10 extends outward by a third length L₃. The third length L₃ is larger than the sum of the first length L₁ and the length of the first edge portion 11. The second covering board 40 is separably coupled to the two side boards 20 by two second coupling elements 60, respectively. The two second coupling elements 60 are each a second zipper and are disposed on two sides of the second covering board 40 and disposed at edges of the two side boards 20 except the lower edge thereof, respectively. The two sides of the second covering board 40 where the second zippers are disposed run along the third length L₃.

Hence, after the second covering board 40 and the two side boards 20 have been erected, the second covering board 40 can be coupled to the two side boards 20 by means of the second zippers, respectively. With the third length L₃ being larger than the sum of the first length L₁ and the length of the first edge portion 11, the distal end of the second covering board 40 can come into contact with the distal end of the first covering board 30 or overlap the distal end of the first covering board 30.

The three-dimensional compartment box is formed, as soon as the two side boards 20, the first covering board 30, and the second covering board 40 are erected to become perpendicular to the rectangular board 10 and then coupled to each other by the two first coupling elements 50 and the two second coupling elements 60. The internal space of the compartment box thus formed holds objects intended by users. The first covering board 30 and the second covering board 40 are separably coupled together to provide a full-shield cover. A concealable opening is formed at the first covering board 30, such that the compartment box can be opened laterally to allow objects to be put into and taken out of the compartment box easily and conveniently.

Referring to FIG. 1, the first covering board 30 has a cord (not shown). The second covering board 40 has two rings 41 penetrable by the cord, so as for the first covering board 30 and the second covering board 40 to be fastened to each other, thereby shutting the concealable opening.

Referring to FIG. 3, the compartment box further comprises at least a partition board 70 for dividing the internal space of the compartment box into multiple units. The at least a partition board 70 is coupled to the rectangular board 10, the first covering board 30 and the second covering board 40 in various ways described below.

Referring to FIG. 4A, FIG. 4B and FIG. 5, the at least a partition board 70 has one side fixedly coupled to the rectangular board 10, another side positioned proximate to the second covering board 40 and thus separably coupled to thereto, and yet another side positioned proximate to the first covering board 30 and thus separably coupled to thereto. Alternatively, the at least a partition board 70 has one side fixedly coupled to the second covering board 40, another side positioned proximate to the rectangular board 10 and thus separably coupled thereto, and yet another side positioned proximate to the first covering board 30 and thus separably coupled thereto.

Hence, the at least a partition board 70 has only one side fixed in place. When the at least a partition board 70 has not yet been installed, the at least a partition board 70 lies flatly on the rectangular board 10 or the second covering board 40 and is fixedly coupled thereto. To start using the compartment box, the users erect the at least a partition board 70, and then fix the at least a partition board 70 to the compartment box by a means of fastening. For example, the at least a partition board 70 has a hook fastening portion 80, whereas the second covering board 40 or the rectangular board 10 has a loop fastening portion 90. The loop fastening portion 90 corresponds in position to the hook fastening portion 80 and thus can be fastened to the hook fastening portion 80, such that the at least a partition board 70 is separably coupled to the second covering board 40 or the rectangular board 10.

Referring to FIG. 4A and FIG. 4B, the loop fastening portion 90 is disposed at the first covering board 30 in a manner to allow the loop fastening portion 90 to correspond in position to the at least a partition board 70, whereas the hook fastening portion 80 is disposed at the at least a partition board 70 in a manner to allow the hook fastening portion 80 to correspond in position to the loop fastening portion 90, such that the at least a partition board 70 can be firmly installed in the compartment box.

Referring to FIG. 6A through FIG. 7, the compartment box further comprises two partition boards 70 disposed at different positions in the compartment box, respectively, to divide the internal space of the compartment box into multiple units.

Referring to FIG. 6A and FIG. 6B, the two partition boards 70 have two sides fixed at different positions on the rectangular board 10 respectively, two other sides positioned proximate to the second covering board 40 and thus separably coupled thereto respectively, and yet two other sides positioned proximate to the first covering board 30 and thus separably coupled thereto respectively. Alternatively, the two partition boards 70 have two sides fixed at different positions on the second covering board 40 respectively, two other sides positioned proximate to the rectangular board 10 and thus separably coupled thereto respectively, and yet two other sides positioned proximate to the first covering board 30 and thus separably coupled thereto respectively.

Referring to FIG. 6C, one (hereinafter referred to as a first partition board 71) of the two partition boards has one side fixedly coupled to the rectangular board 10, another side positioned proximate to the second covering board 40 and thus separably coupled thereto, and yet another side positioned proximate to the first covering board 30 and thus separably coupled thereto, whereas the other partition board (hereinafter referred to as a second partition board 72) has one side fixedly coupled to the second covering board 40, another side positioned proximate to the rectangular board 10 and thus separably coupled thereto, and yet another side positioned proximate to the first covering board 30 and thus separably coupled thereto, wherein the first partition board 71 and the second partition board 72 are not in contact with each other.

Similarly, the partition boards 70 are fixed in place by the hook fastening portions 80 and the loop fastening portions 90. Referring to FIG. 6A, the partition boards 70 each have two hook fastening portions 80, whereas two loop fastening portions 90 are disposed at the first covering board 30 and the second covering board 40, respectively. The loop fastening portions 90 correspond in position to the hook fastening portions 80 and thus are fastened thereto, respectively, such that the partition boards 70 are separably coupled to the second covering board 40 and the first covering board 30.

Referring to FIG. 6B, the partition boards 70 each have two hook fastening portions 80, whereas two loop fastening portions 90 are disposed at the first covering board 30 and at the rectangular board 10. The loop fastening portions 90 correspond in position to the hook fastening portions 80 and thus are fastened thereto, respectively, such that the partition boards 70 are each separably coupled to the rectangular board 10 and the first covering board 30.

Referring to FIG. 6C, the first partition board 71 has a first hook fastening portion 81, whereas the second covering board 40 has a first loop fastening portion 91 corresponding in position to the first hook fastening portion 81, such that the first loop fastening portion 91 and the first hook fastening portion 81 are fastened′ together to allow the first partition board 71 to be separably coupled to the second covering board 40. The second partition board 72 has a second hook fastening portion 82, whereas the rectangular board 10 has a second loop fastening portion 92 corresponding in position to the second hook fastening portion 82, such that the second loop fastening portion 92 and the second hook fastening portion 82 are fastened together to allow the second partition board 72 to be separably coupled to the rectangular board 10.

Likewise, the loop fastening portions 90 are disposed at the first covering board 30 in a manner to allow the loop fastening portions 90 to correspond in position to the first partition board 71 and the second partition board 72, respectively, whereas the hook fastening portions 80 are disposed at the first partition board 71 and the second partition board 72 in a manner to allow the hook fastening portions 80 to correspond in position to the loop fastening portions 90, respectively, such that the first partition board 71 and the second partition board 72 can be firmly installed in the compartment box.

Referring to FIG. 8A through FIG. 12B, the compartment box further comprises two partition boards 70. The two partition boards 70 overlap each other to reinforce themselves. Two fasteners 74 are disposed on contact surfaces of the two partition boards 70 overlapping each other, respectively, such that the two partition boards 70 can be separably coupled together and temporarily coupled together as soon as the two fasteners 74 are fastened together. The two partition boards 70 overlapping each other are collectively defined as a reinforced partition board 73. The reinforced partition board 73 is coupled to the rectangular board 10, the first covering board 30, and the second covering board 40 in various ways described below.

Referring to FIG. 8A, the two partition boards 70 (known collectively as the reinforced partition board 73) each have one side fixed at the same position on the rectangular board 10. The hook fastening portions 80 are disposed at the other two sides of the two partition boards 70 in a manner to allow the hook fastening portions 80 to come into contact with the first covering board 30 and the second covering board 40. The loop fastening portions 90 are disposed at the first covering board 30 and the second covering board 40 in a manner to allow the loop fastening portions 90 to correspond in position to the hook fastening portions 80 and thus get fastened thereto, such that two sides of the reinforced partition board 73 are separably coupled to the first covering board 30 and the second covering board 40, respectively.

Referring to FIG. 8B, the two partition boards 70 (known collectively as the reinforced partition board 73) each have one side fixed at the same position on the second covering board 40. The hook fastening portions 80 are disposed at the other two sides of the two partition boards 70 in a manner to allow the hook fastening portions 80 to come into contact with the first covering board 30 and the rectangular board 10. The loop fastening portions 90 are disposed at the first covering board 30 and the rectangular board 10 in a manner to allow the loop fastening portions 90 to correspond in position to the hook fastening portions 80 and thus get fastened thereto, such that two sides of the reinforced partition board 73 are separably coupled to the first covering board 30 and the rectangular board 10, respectively.

Referring to FIG. 9, when installed in the compartment box, the reinforced partition board 73 not only partitions the internal space of the compartment box, but also serves as an auxiliary structural supporting element of the compartment box to reinforce the compartment box.

Referring to FIG. 10A, FIG. 10B and FIG. 11, the compartment box further comprises four partition boards 70. Two of the partition boards 70 overlap each other and are separably coupled together to collectively form a first reinforced partition board 731, whereas the other two partition boards 70 overlap each other and are separably coupled together to collectively form a second reinforced partition board 732. Corresponding ones of the partition boards 70 can be coupled to each other by the fastener 74 fastenable to each other, regardless of whether the corresponding ones of the partition boards 70 are intended to collectively form the first reinforced partition board 731 or form the second reinforced partition board 732.

Referring to FIG. 10A, one side of the first reinforced partition board 731 is fixedly coupled to the rectangular board 10. The hook fastening portions 80 are disposed at the edges of two other sides of the first reinforced partition board 731, respectively, wherein the first covering board 30 and the second covering board 40 are in contact with the two other sides of the first reinforced partition board 731, respectively. The loop fastening portions 90 are disposed at the first covering board 30 and the second covering board 40, respectively, in a manner to allow the loop fastening portions 90 to correspond in position to the hook fastening portions 80, respectively. The loop fastening portions 90 are fastenable to the hook fastening portions 80, respectively, such that two sides of the first reinforced partition board 731 are separably coupled to the first covering board 30 and the second covering board 40, respectively.

One side of the second reinforced partition board 732 is fixedly coupled to the second covering board 40. The hook fastening portions 80 are disposed at the edges of two other sides of the second reinforced partition board 732, respectively, wherein the first covering board 30 and the rectangular board 10 are in contact with the two other sides of the second reinforced partition board 732, respectively. The loop fastening portions 90 are disposed at the first covering board 30 and the rectangular board 10, respectively, in a manner to allow the loop fastening portions 90 to correspond in position to the hook fastening portions 80, respectively. The loop fastening portions 90 are fastenable to the hook fastening portions 80, respectively, such that two sides of the second reinforced partition board 732 are separably coupled to the first covering board 30 and the rectangular board 10, respectively. The first reinforced partition board 731 and the second reinforced partition board 732 are not in contact with each other but are disposed at different positions, respectively, to divide the internal space of the compartment box into multiple units.

Referring to FIG. 10B, one side of the first reinforced partition board 731 and one side the second reinforced partition board 732 are fixedly coupled to the rectangular board 10, respectively. The hook fastening portions 80 are disposed at two other sides of each of the first and second reinforced partition boards 731, 732 in a manner to allow the hook fastening portions 80 to come into contact with the first covering board 30 and the second covering board 40. The loop fastening portions 90 are disposed at the first covering board 30 and the second covering board 40 in a manner to allow the loop fastening portions 90 to correspond in position to the hook fastening portions 80 and thus get fastened thereto, respectively, such that two sides of each of the first reinforced partition board 731 and the second reinforced partition board 732 are separably coupled to the first covering board 30 and the second covering board 40, respectively.

Although they are not shown in the diagrams, one side of the first reinforced partition board and one side of the second reinforced partition board are fixedly coupled to the second covering board, whereas the hook fastening portions are disposed at two other sides of each of the first and second reinforced partition boards in a manner to allow the hook fastening portions to come into contact with the first covering board and the rectangular board. The loop fastening portions are disposed at the first covering board and the rectangular board in a manner to allow the loop fastening portions to correspond in position to the hook fastening portions and thus get fastened thereto, respectively, such that two sides of each of the first reinforced partition board and the second reinforced partition board are separably coupled to the first covering board and the rectangular board, respectively.

Referring to FIG. 12A and FIG. 12B, the two partition boards (known collectively as the reinforced partition board 73) are fixedly coupled to the rectangular board 10 and the second covering board 40. For example, the partition boards each having one side fixedly coupled to the rectangular board 10 are defined as the first partition boards 71, whereas the partition boards each having one side fixedly coupled to the second covering board 40 are defined as the second partition boards 72. The locations of the first partition board 71 and the second partition board 72 enable the first partition board 71 and the second partition board 72 to overlap each other and be separably coupled to each other.

The first partition board 71 has a first fastener 741, and the second partition board 72 has a second fastener 742. The first fastener 741 and the second fastener 742 are disposed on the contact surfaces of the first partition board 71 and the second partition board 72, respectively, and can be fastened to each other so as to couple the first partition board 71 and the second partition board 72 together temporarily, thereby allowing the first partition board 71 and the second partition board 72 to collectively form the reinforced partition board 73.

The loop fastening portion 90 comprises a plurality of loops, whereas the hook fastening portion 80 comprises a plurality of hooks, such that the loop fastening portion 90 and the hook fastening portion 80 can be fastened to each other, but the present invention is not limited thereto.

As regards single said partition board 70 or two said partition boards 70 which together form the reinforced partition board 73, their quantity and positions in the compartment box are not subjected to any limitations according to the present preset, and their purpose is to not only partition the internal space of the compartment box but also reinforce the compartment box. When the partition board 70 and the reinforced partition board 73 have not yet been installed, they lie flatly on the rectangular board 10 or the second covering board 40 and are fixedly coupled thereto to facilitate storage.

The full-shield cover formed with the first covering board 30 and the second covering board 40 has the concealable opening which is disposed at the first covering board 30 and faces laterally; hence, a large opening can be formed on the compartment box and at the first covering board 30 to allow the users to put/take any object into/from the compartment box easily. Furthermore, zippers not only couple together the edges of the rectangular board 10, the side boards 20, the first covering board 30 and the second covering board 40 to form the three-dimensional compartment box but also enable the compartment box to be easily disassembled and flattened to facilitate storage.

The foregoing embodiments are provided to illustrate the characteristics of the present invention so as to enable persons skilled in the art to understand the disclosure of the present invention and implement the present invention accordingly, and are not intended to be restrictive of the scope of the present invention. Hence, all equivalent modifications and changes made to the foregoing embodiments without departing from the spirit embodied in the disclosure of the present invention should fall within the scope of the present invention as set forth in the appended claims. 

What is claimed is:
 1. A compartment box for motor vehicles, the compartment box comprising: a rectangular board having a first edge portion, a second edge portion, a third edge portion, and a fourth edge portion consecutively connected; two side boards formed by extending the first edge portion and the third edge portion by a first length; a first covering board formed by extending the second edge portion by a second length and separably coupled to the two side boards by two first coupling elements, respectively, the second length being less than the first length; and a second covering board formed by extending the fourth edge portion by a third length and separably coupled to the two side boards by two second coupling elements, respectively, the third length being larger than a sum of the first length and a length of the first edge portion, wherein the first covering board and the second covering board are separably coupled together to provide a full-shield cover, and a concealable opening is provided at the first covering board.
 2. The compartment box of claim 1, further comprising at least a partition board with a side fixedly coupled to the rectangular board and another side separably coupled to the second covering board.
 3. The compartment box of claim 2, wherein the at least a partition board has a hook fastening portion, and the second covering board has a loop fastening portion corresponding in position to the hook fastening portion and thus fastenable thereto, such that the at least a partition board is separably coupled to the second covering board.
 4. The compartment box of claim 1, further comprising at least a partition board with a side fixedly coupled to the second covering board and another side separably coupled to the rectangular board.
 5. The compartment box of claim 4, wherein the at least a partition board has a hook fastening portion, and the rectangular board has a loop fastening portion corresponding in position to the hook fastening portion and thus fastenable thereto, such that the at least a partition board is separably coupled to the rectangular board.
 6. The compartment box of claim 1, further comprising two partition boards with two sides fixed at different positions on the rectangular board, respectively, and two other sides separably coupled to the second covering board.
 7. The compartment box of claim 6, wherein the partition boards each have a hook fastening portion, and the second covering board has two loop fastening portions corresponding in position to the hook fastening portions and thus fastenable thereto, respectively, such that the partition boards are separably coupled to the second covering board.
 8. The compartment box of claim 1, further comprising two partition boards with two sides fixed at different positions on the second covering board, respectively, and two other sides separably coupled to the rectangular board.
 9. The compartment box of claim 8, wherein the partition boards each have a hook fastening portion, and the rectangular board has two loop fastening portions corresponding in position to the hook fastening portions and thus fastenable thereto, respectively, such that the partition boards are separably coupled to the rectangular board.
 10. The compartment box of claim 1, further comprising a first partition board and a second partition board, the first partition board having a side fixedly coupled to the rectangular board and another side separably coupled to the second covering board, and the second partition board having a side fixedly coupled to the second covering board and another side separably coupled to the rectangular board, wherein the first partition board and the second partition board are not in contact with each other.
 11. The compartment box of claim 10, wherein the first partition board has a first hook fastening portion, and the second covering board has a first loop fastening portion corresponding in position to the first hook fastening portion and thus fastenable thereto, such that the first partition board is separably coupled to the second covering board, wherein the second partition board has a second hook fastening portion, and the rectangular board has a second loop fastening portion corresponding in position to the second hook fastening portion and thus fastenable thereto, such that the second partition board is separably coupled to the rectangular board.
 12. The compartment box of claim 1, further comprising two partition boards overlapping each other and being separably coupled together, wherein the two partition boards have two sides fixed at a same position on the rectangular board and two other sides separably coupled to the second covering board, respectively.
 13. The compartment box of claim 12, further comprising two fasteners disposed on contact surfaces of the partition boards, respectively, and can be fastened to each other so as to couple the partition boards together temporarily.
 14. The compartment box of claim 1, further comprising two partition boards overlapping each other and being separably coupled together, wherein the partition boards have two sides fixed at a same position on the second covering board and two other sides separably coupled to the rectangular board, respectively.
 15. The compartment box of claim 14, further comprising two fasteners disposed on contact surfaces of the partition boards, respectively, and can be fastened to each other so as to couple the partition boards together temporarily.
 16. The compartment box of claim 1, further comprising four partition boards, two said partition boards overlapping each other and being separably coupled together to collectively form a first reinforced partition board with a side fixedly coupled to the rectangular board and another side separably coupled to the second covering board, two other said partition boards overlapping each other and being separably coupled together to collectively form a second reinforced partition board with a side fixedly coupled to the second covering board and another side separably coupled to the rectangular board, wherein the first reinforced partition board and the second reinforced partition board are not in contact with each other.
 17. The compartment box of claim 16, further comprising two fasteners respectively disposed on contact surfaces of the partition boards overlapping each other and adapted to fasten the partition boards together.
 18. The compartment box of claim 1, further comprising a first partition board and a second partition board, the first partition board having a side fixedly coupled to the rectangular board, and the second partition board having a side fixedly coupled to the second covering board, wherein the second partition board and the first partition board overlap each other and are separably coupled together.
 19. The compartment box of claim 18, wherein the first partition board and the second partition board each have a contact surface whereby the first partition board and the second partition board can be in contact with each other, wherein a first fastener and a second fastener are disposed on the contact surfaces of the first and second partition boards, respectively, and can be fastened to each other so as to couple the first partition board and the second partition board together temporarily.
 20. The compartment box of claim 1, further comprising a flange disposed at a periphery of the rectangular board.
 21. The compartment box of claim 20, wherein the two first coupling elements are first zippers disposed on two sides of the first covering board, respectively, in a manner to allow the two sides of the first covering board where the first zippers are disposed to run, along the second length, and disposed at lower edges of the two side boards, respectively, wherein the two second coupling elements are second zippers disposed on two sides of the second covering board, respectively, in a manner to allow the two sides of the second covering board where the second zippers are disposed to run along the third length, and disposed at edges of the two side boards except the lower edge thereof, respectively. 